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a. what is the name of the 3D shape?

b. what is the formula for total surface area for this shape?

c. what is the surface area of the figure?

a what is the name of the 3D shape b what is the formula for total surface area for this shape c what is the surface area of the figure class=

Respuesta :

Answer:

a. A triangular prism

b. SA = bh + Pd  

c. 144 cm²

Step-by-step explanation:

b. SA = bh + Pd   where b is the base of the base triangle, is the height of the base triangle, P is the perimeter of the base triangle, and d is the depth of the triangle (the depth is perpendicular to the base triangle)

SA = bh + Pd

b = 4

h = 3

P = 3 + 4 + 5 = 12

d = 11, so

SA = 4(3) + 12(11) = 144

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